Mechanism for twisting and covering cord or other materials.



E. W. cooPER. MEGHANISM'IOR TWISTING AND QOVERING CORD 0R OTHER MATERIALS.- y y w APPLIGATION FILED mrLzz, 19;'2. l1,100,538 i Patented June 16, 1914.

2 SHEETS-SHEET 1.

WlTNEssEs f NvENTon HTTQRNEYS l Patented June 16, 1914.

A 2 SHEETS-SHEET 2.

1:. W. COOPER. MEGHANISM FOR TWISTING AND COVERINGv GORD'OR OTHER MATERIALS.

4 APPLICATION FILED JAN.22, 1912. l, 1 00,538.

- HTTORNEYS 11.* 1 1 ./IE. \\\\\\\\\\\\\\\\\1 :EEE: MW m WiTNEssEs Aio EnwnnD-vwmcoornn, or covENrnY, ENGLAND.

MECHANISM Fon. rwis'rno AND covnnme com) on OTHER' Mammals.

- Specification of Letters Patent.

Patented June 16,1914.

application mea January 22,1912. serial No. 672,749.

To all whom it may concern' Be it known that I', COOPER, a subject of the IKing of Great Britain, and a resident. of .Coventry, county of Warwick, England, have invented certain Improvements Relating to .Mechanism for Twisting and Covering Cord or other Materials, of which the following is' a specification..

The invention relates to improvements in machinery for twisting and cbvering cord or .other material in the manufacture. of

gimp and the like.

' For the most part gimp and similar covered cord is manufactured in lengths andv not continuously owing to the -vdiiiculty which is experienced with machines for continuous production in providing a constant and uniform rate of feed of the core or gut 2() from one bobbin to another. Hitherto the feeding has been effected by the rotation of the freceiving bobbin or its. equivalent in.

such ay manner that the material is drawn from the supply. or delivery bobbin. O bviouslymthel rate yof feed in such-cases varies with the amount of materialv on the receiving bobbin and as' it isessential that the rate of feed be uniform such machines could not' be satisfactory.

tory machine' According to this 1nvention, a satisfacforthe continuous production of glimp is rendered possible by theemployment of a feeding device over which the gut passes on its way from the delivery bobbin. Such feeding deviceglwhich may comprise a pulley lor -set of pulleys is driven at a `constant speed.

In machines for twisting and` winding strands' to form string or the like it has been proposed to pass leach strand o n its way from itsbobbin around a grooved pulley which'is loose on the journal at the delivery end 0f the ilier frame, and which is driven by gearing at a dierent speed from the flier frame lto draw thefstrand oi' its bobbin. It

. y will be seen hereafter that by this invention the employmentl of gear wheels and the like is dispensed with..-

VToobviate the employment of gearing the spindle 'driving such vfeeding device may pass through ahollow spindle which pear` ries thedelivery. .,ier.- v'Iheseton'centric spindlesv are provided with r ui'reddime`n'sions enabling themn to be An. important feature 1s :that

EDWARD WARD- in thel Y As the receivin pulleys of the l passes around'a guide pulley just prior to being covered with the covering maternal.

lBy employingv a .guide pulley of comparatively large dimensions' a comparatively great length of gut is in `Contact with the periphery, and a. stroking action is imparted tov the ut, which removes all lui etc., and has all the gut resulting in a smoother gimp and better inish than is usuallyobtained.l

The axis of the reels or'bobbins lies in the axis of the threads and for this vpurpose a special form of hier is preferable for the delivery bobbin which is rotated at a slightly higher speed than the receiving one which revolves-in the same direction and thus puts the primarytwist'into the threads. bobbin and flier run slightly slower t an the vdelivery flier a small amount of twist is left in the finished material, the amount of twist'being varied according to requirements. When it is desired that the material'. be finished` lim `or dead the-twist must be slight. The stiffer the material is required the more twist may be left in the relative speed between the receiving bobbin and its flier ingly. y

In the manufacture of .gimp the cotton or other stranded material which forms the core or gut is twisted slightly and revolved very fast so as toidraw on a covering layer .which consists of stranded covering ma- In the drawings all unnecessary framework etc., is omitted for the sake of clearnesds. .l

f- Figure 1 is a perspective View showing one side of the machine from above.

Fig.

adjusted accord? nd of burnishing effect on Y 2lis Aa longitudinal section through the delivery flier andthe adjacent parts. Fig. 3 isatperspective view ofpart of the machine showing the actual covering of the twisted V gut with silk strands,and Fig. 4 isa viewy corresponding to part of Fig. 2, showing a,

,modification rLike letters indicate like parts throughout the drawings. f v

In the construction Aillustrated there is a horizontal spindle ,Aasee Fig: 2, on which is ifrictionally mounted the delivery bobbin Bl jand this spindle A passes through a hollow spindle Cy to which is attached the;corre sponding. flier D. The feed pulley E fixed tio the spindle-A rotates slightly faster than the' flier D so that the material wound on the bobbin B is drawn H1 and fed through y the flier. It is not essential that the bobbin B rotate except in so far as it has to keep up with the Hier D. If the bobbin B remains stationary and the Hier D revolves around it the Hier.7 will have the effect of taking off the thread from the bobbin at a higher speed than the feed pulley E would permit. Where the rate of feed is high the bobbin B can be .stationary or 'nearly so, andthe feed pulley E adapted to feed proportionately faster. Further a stationary bobbin or cop may be used as in such case the material wound on the 'cop is drawn 0H' endwise. Preferabl the Hier D is of the special shape illustrate being of st-irrup form, the ends D2 of the stirru being secured to a cross-piece D3 attache to the hollow spindle C. The Hier D is consequently balanced and symmetrical desirable number of strands.

yand it is suitably formed for the passage of vthe thread or gut F, which mayhave any For instance thispasses oifthe bobbin through holes D2 and across from one side of the Hier to the other,fpassing around the feeding pulley E,

. and from there running along the side of the Hier y.fas atv F2 and leavin it atthe. center G of the outer end. The eeding pulley E is on the spindle A on which the bobbin is loosely mounted' and as stated it runs slightly faster than the Hier D with the result that the material F is drawn off. the

bbbin, while.the Hier performs its normal function of twisting the material on its axis as shown at H. Preferably the twisted material H passes around a guide ulley J and is received on to the receiving obbin K which is mounted l loosely upon the 'spindle L2 of its Hier L which may be of the ordinary type used in cotton spinning. The Hier is driven by any i suitable means and the bobbin by means of of slightly different dimensions vrelatively .large dimensions.

its own. For instance, it may carry a belt pulley K2 as may the Hier spindle at L2 both being driven from a common pulley K2, the two driven pulleys K2 yand L2 being to give the `speeds required. They are also stepped so that the speed of each may be varied slightly.

.It will be noticed that the pulle J is of It as been p proposed 'hitherto to pass the cord around small guide pulleys but in" such cases the contact between the thread and the pulley was small and such guide pulleys were provided to bring the thread'into the correct line. In the present case the contact between the thread and the grooved-pulley is long, and it will be understood that the gut H vrotates in the groove in the pulley with the result thatany loose' bits of HuH" are removed and the core smoothed down just prior to covering.

The thread H in passing from one bobbin to the other passes over the spreader M,

which may be provided with detachable wearing parts, and has applied to it the covering material takin the form of silk strands orvother materlal N. This material may be supplied from spools N2 the different strands passing from the spools roughly parallel to one another over a finger O and around the spreader M. The ends of the covering material N are first wrapped around the adjacent material H which constitutes the gut, and its revolution draws off the covering material N from the spools, causing'it to wrap around the ut in the usual manner, while at the same time the material is fed forward from one bobbin to the other. It will be clear therefore that any suitable number of strands N of covering material may be used and that production is continu-` ous as lon as there is any thread on the delivery bob in.

Obviously the spindles A and C may be driven in any suitable manner. In the construction illustrated each of these is provided with a belt pulley P, P2 driven from a common driving pulley P3 mounted upon a driving shaft U. As is necessary the pulley P2 is slightly smaller than the ulley P as the feed pulley E drivenfrom t el pulley P2 is rotated slightly faster than the Hier D. The belt P* for driving the pulleys P, P2 may pass around a jockey pu ley P5 the arm of which is acted on by a spring P to retain it at the desired tension. The belt R which drives the pulleys K2, L2 may also pass around a jockey pulley R2 the lever carrying which is acted on by a spring Rs to maintain the tension of the belt R.

The receiving bobbin K and its belt pulley K2 may be moved axially in relation to theHier in order that the silk covered gimp S ma be evenly distributed on the bobbin. For t is purpose the belt pulley K2 is engaged by an arm T which may be raised and owered gradually by means of suitable mechanismbf any well known type. For instance, a heart shaped cam, (not illustrated) may act on the arm T, the cam receiving its motion at a suitable reduction from the main driving shaft U which may receive motion from any suitable source."

When the feed from the delivery bobbin y is to be .relatively high it might be desirable that the material, such as F, Fig. 2, may have a. better grip on the feed pulley E. In some cases it might be possible to wra the material more than once around the fee pulley, but where this is not the case the construction illustrated in Fig. 4 may be used. Here the feed pulley is rovided with two grooves E2 and the fee ing material may ass around these grooves and also aroun loose grooved rollers V. Thus the surface of contact between the material and the pulley E2 is greatly increased. Where it is desirable to draw out the material lao slightly the pulley E2 may be geared to the rollers V so that a relative speed is set up and the material given'a slight draw-out, in the Well known manner.

vWhat I claim and desire to secure by Letters Patent of the United States is l. In a machine for the purpose described, the combination of a delivery bobbin, a feed pulley arranged to Withdraw material from said bobbin and mounted to rotate about the axis of the bobbin, and a Hier for guiding said material rotatable about said axis p at a dilferent speed from the feed pulley.

2. In a machine for the purpose desorlbed, the combination of a delivery flier having a tubular spindle, means for rotating the flier, 'a delivery bobbin supported Within the flier, and independently rotatable about the axis thereof, and means for rotating the bobbin at a higher speed thany the flier including a member supported within the tubular spindle of the fiier.

3. In a machine for the purpose described, the combination of a bobbln, a spindle -therefor, a feed pulley on the spindle rotatable independently of the bobbin andarranged to Withdraw material from the bobbin, a second spindle concentrically mounted With respect to said first-mentioned spindle, said spindles being independently rotatable7 and a flier mounted on said second spindle and adapted to twist the material Withdrawn from the bobbin by said pulley.

In testimony whereof I have signed my name to this specification in the presence of two subscribin wtnesses.`

ED ARD WARD COOPER. Witnesses:

HAROLD F. E. PAYNE, ERNEST F. PARKER. 

